Plot hole: Near the end, at the assembly, the old lady sitting on stage can't even lift the turkey. But about 90 seconds later, she's running away from the can pyramid. What a miraculous recovery.
Revealing mistake: Right after TJ and friends are looking at the "thermometers" of cans, the Ashleys have at least 4 crates of cans that they bring in on forklifts. However, the end result is 4,362 cans for the Ashleys. This may seem kind of picky, but I think there was more cans than 4,362.
Suggested correction: This is literally just an assumption, and nothing else. 4,362 is a pretty huge number, and with the amount of cans that we see the Ashleys collect in the episode, combined with the amount of cans that they and the rest of Miss Furley's class collected off-screen, it is perfectly believable that Miss Furley's class would end up collecting that amount of cans.
Continuity mistake: When the kids are fighting over the can at the celebration, the can keeps swapping between green and red between shots. There is also one shot where the can is red but turns green twice in two frames.
